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a. Calculate the sample means. Xcorporate =[ XNavy =0 (Round to two decimal places as needed.)

a. Calculate the sample means. Xcorporate =[ XNavy =0 (Round to two decimal places as needed.)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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A statistics student collected data on the prices of the same items at a military commissary and a nearby corporate store. The items were matched for content, manufacturer, and size and were priced separately. a. Report and compare the sample means. b. Assume that they are a random sample of items, and use a significance level of 0.05 to test the hypothesis that the military commissary has a lower mean price. Assume that the population distribution of differences is approximately Normal. Click the icon to view the data. a. Calculate the sample means. ХCогрoгate 3 More info XNavy = (Round to two decimal places as needed.) Corporate Military Commissary 16.98 Item Store 18.26 4.47 2.65 3 4.98 5.57 4 8.12 6.07 2.88 2.66 3.88 4.36 7 4.98 4.09 3.56 4.08 8 3.07 9 2.82 10 4.27 2.78 11 1.58 0.89 12 2.93 5.98 2.24 13 1.77 14 6.22 4.73 15 3.07 5.25 16 4.27 4.02 17 7.54 7.68 18 1.38 1.26 19 1.08 0.78 20 2.29 2.51 0.65 21 0.81 22 1.73 1.92 23 0.83 0.54 2.64 2.54 24 3.83 25 1.87 26 0.99 0.85 27 2.51 2.31 28 1.43 1.37 1.29 29 2.68 30 1.07 0.99 31 0.65 0.64 32 1.58 1.31
Transcribed Image Text:A statistics student collected data on the prices of the same items at a military commissary and a nearby corporate store. The items were matched for content, manufacturer, and size and were priced separately. a. Report and compare the sample means. b. Assume that they are a random sample of items, and use a significance level of 0.05 to test the hypothesis that the military commissary has a lower mean price. Assume that the population distribution of differences is approximately Normal. Click the icon to view the data. a. Calculate the sample means. ХCогрoгate 3 More info XNavy = (Round to two decimal places as needed.) Corporate Military Commissary 16.98 Item Store 18.26 4.47 2.65 3 4.98 5.57 4 8.12 6.07 2.88 2.66 3.88 4.36 7 4.98 4.09 3.56 4.08 8 3.07 9 2.82 10 4.27 2.78 11 1.58 0.89 12 2.93 5.98 2.24 13 1.77 14 6.22 4.73 15 3.07 5.25 16 4.27 4.02 17 7.54 7.68 18 1.38 1.26 19 1.08 0.78 20 2.29 2.51 0.65 21 0.81 22 1.73 1.92 23 0.83 0.54 2.64 2.54 24 3.83 25 1.87 26 0.99 0.85 27 2.51 2.31 28 1.43 1.37 1.29 29 2.68 30 1.07 0.99 31 0.65 0.64 32 1.58 1.31
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